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Finding the Fourth Proportional to 212,360.44, 318,540.64 and 54,589.04

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Solution

The fourth proportional to 212,360.44, 318,540.64 and 54,589.04 is: 81,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,360.44 : 318,540.64 = 54,589.04 : x
  2. Step 2: Convert to fraction form
    212,360.44/318,540.64 = 54,589.04/x
  3. Step 3: Cross multiply
    212,360.44x = 318,540.64 × 54,589.04
  4. Step 4: Simplify right side
    212,360.44x = 17,388,827,738.59
  5. Step 5: Solve for x
    x = 17,388,827,738.59/212,360.44
  6. Step 6: Final answer
    x = 81,883.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.